Free U.S. Shipping Over $60
Rule 1 R1 Casein Protein
Rule 1 utilizes 25g per serving of Micellar Casein in R1 Casein protein formula, so it keeps working long after you've left the gym. It's slow-release formulation is designed for occasions when you want a protein that takes its time and delivers its amino acids benefits over several hours.
Thick and satisfying, R1 Casein extends amino acid delivery for several hours, making this great between meals or as an overnight protein.